(a) For spacing purposes, multiple faced off-premise signs under common ownership, whether double-faced, back-to-back, or of V-type construction, are considered to be one sign and the combined face area of the signs will be used to determine spacing requirements provided the sign faces are:
  (1) physically contiguous;
  (2) connected by the same structure or by cross-bracing; or
  (3) located not more than 15 feet apart at their nearest point.
(b) For computing sign face area under §21.428 of this subchapter (relating to Sign Face Size and Positioning) each sign face of a double-faced, back-to-back, or V-type sign is considered to be a separate sign.
(c) If a nonconforming sign has two sign faces fronting the same direction of travel, the sign face area of both signs will be used to determine the sign spacing requirements.

Source Note: The provisions of this §21.430 adopted to be effective July 1, 2011, 36 TexReg 2418